using CPRNIMS.Domain.UIContracts.Common;
using CPRNIMS.Domain.UIContracts.Inventory;
using CPRNIMS.Infrastructure.Dto.Inventory.Reports;
using CPRNIMS.Infrastructure.Dto.Inventory.Reports.Response;
using CPRNIMS.Infrastructure.Helper;
using Microsoft.Extensions.Configuration;
using System.Text;
using System.Text.Json;

namespace CPRNIMS.Domain.UIServices.Inventory
{
    public class InventoryReports : IInventoryReports
    {
        private readonly IConfiguration _configuration;
        private readonly TokenHelper _tokenHelper;
        private readonly IApiConfigurationService _apiConfigurationService;
        public InventoryReports(IConfiguration configuration, TokenHelper tokenHelper, IApiConfigurationService apiConfigurationService)
        {
            _configuration = configuration;
            _tokenHelper = tokenHelper;
            _apiConfigurationService = apiConfigurationService;
        }
        private static readonly JsonSerializerOptions _jsonOpts = new()
        {
            PropertyNameCaseInsensitive = true
        };
        public async Task<InventoryReportDto> GetInventoryReportAsync(DateTime dateFrom, DateTime dateTo, CancellationToken ct)
        {
            var token = await _tokenHelper.GetValidTokenAsync();
            if (string.IsNullOrEmpty(token))
                throw new InvalidOperationException("Token has been expired.");

            var baseEndpoint = _configuration["LLI:NonInvent:InventoryMgmt:GetInventoryReport"]
                ?? throw new InvalidOperationException("GetInventoryReport endpoint is not configured.");

            var qs = new StringBuilder(baseEndpoint).Append('?');
            qs.Append($"dateFrom={dateFrom:yyyy-MM-dd}&dateTo={dateTo:yyyy-MM-dd}");  

            using var http = _apiConfigurationService.CreateHttpClientWithDefaultHeaders(token);
            var response = await http.GetAsync(qs.ToString(), ct);
            var json = await response.Content.ReadAsStringAsync(ct);

            if (!response.IsSuccessStatusCode)
                return new InventoryReportDto();

            var result = JsonSerializer.Deserialize<InventoryReportDto>(json, _jsonOpts);
            return result ?? new InventoryReportDto();
        }

        public async Task<MRSReportDto> GetMRSReportAsync(DateTime dateFrom, DateTime dateTo, CancellationToken ct)
        {
            var token = await _tokenHelper.GetValidTokenAsync();
            if (string.IsNullOrEmpty(token))
                throw new InvalidOperationException("Token has been expired.");

            var baseEndpoint = _configuration["LLI:NonInvent:InventoryMgmt:GetMRSReport"]
                ?? throw new InvalidOperationException("GetMRS endpoint is not configured.");

            var qs = new StringBuilder(baseEndpoint).Append('?');
            qs.Append($"dateFrom={dateFrom:yyyy-MM-dd}&dateTo={dateTo:yyyy-MM-dd}");

            using var http = _apiConfigurationService.CreateHttpClientWithDefaultHeaders(token);
            var response = await http.GetAsync(qs.ToString(), ct);
            var json = await response.Content.ReadAsStringAsync(ct);

            if (!response.IsSuccessStatusCode)
                return new MRSReportDto { };

            var result = JsonSerializer.Deserialize<MRSReportDto>(json, _jsonOpts);
            return result ?? new MRSReportDto();
        }

        public async Task<RISReportDto> GetRISReportAsync(DateTime dateFrom, DateTime dateTo, CancellationToken ct)
        {
            var token = await _tokenHelper.GetValidTokenAsync();
            if (string.IsNullOrEmpty(token))
                throw new InvalidOperationException("Token has been expired.");

            var baseEndpoint = _configuration["LLI:NonInvent:InventoryMgmt:GetRISReport"]
                ?? throw new InvalidOperationException("GetMRS endpoint is not configured.");

            var qs = new StringBuilder(baseEndpoint).Append('?');
            qs.Append($"dateFrom={dateFrom:yyyy-MM-dd}&dateTo={dateTo:yyyy-MM-dd}");

            using var http = _apiConfigurationService.CreateHttpClientWithDefaultHeaders(token);
            var response = await http.GetAsync(qs.ToString(), ct);
            var json = await response.Content.ReadAsStringAsync(ct);

            if (!response.IsSuccessStatusCode)
                return new RISReportDto {};

            var result = JsonSerializer.Deserialize<RISReportDto>(json, _jsonOpts);
            return result ?? new RISReportDto();
        }
    }
}